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Finding the Fourth Proportional to 581,617.30, 815,923.10 and 581,617.30

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Solution

The fourth proportional to 581,617.30, 815,923.10 and 581,617.30 is: 815,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,617.30 : 815,923.10 = 581,617.30 : x
  2. Step 2: Convert to fraction form
    581,617.30/815,923.10 = 581,617.30/x
  3. Step 3: Cross multiply
    581,617.30x = 815,923.10 × 581,617.30
  4. Step 4: Simplify right side
    581,617.30x = 474,554,990,429.63
  5. Step 5: Solve for x
    x = 474,554,990,429.63/581,617.30
  6. Step 6: Final answer
    x = 815,923.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.